J-PLUS DR1 covers an area of 1,022 \( {\rm deg}^2\)  on the sky with a magnitude limit of \(\sim 21.5\)  for a signal to noise ratio of \(\sim \)  3. These 12 bands provide a large sample for us to characterize the spectral energy distribution of the detected sources [1]}. The 12-band magnitudes are adopted as our training features, which are \(u\) , \(J0378\) , \(J0395\) , \(J0410\) , \(J0430\) , \(g\) , \(J0515\) , \(r\) , \(J0660\) , \(i\) , \(J0861\) , \(z\) . We name them mag1 to mag12 for simplicity.
